Hello everyone, I am Feng Ge. In the era of the Internet of Things, an efficient and reliable IoT platform has become the core hub connecting the physical world with the digital world. Today, we will delve into ThingsBoard — this Java-based open-source IoT platform that provides powerful support for device management, data processing, and … Read more
🌟 Comprehensive Guide to ESP32 Power Management: From 5μA Deep Sleep to Wi-Fi 6 Energy-Saving Technology! Can a button battery last for 3 years? Discover how the “energy police” of IoT devices work. 🔋 1. Three-Level Power Consumption Modes: Precisely Control Every Microamp The power management system of the ESP32 acts like asmart energy dispatch … Read more
🧠 1. Physical Storage Structure On-Chip Memory IRAM (Instruction RAM) 192KB (ESP32 classic version), with the first 64KB fixed for dual-core CPU cache, and the remaining space used for high-speed execution code (such as interrupt functions). DRAM (Data RAM) 328KB, used for global variables and stack data. About 64KB will be occupied by the protocol … Read more
🌟 Comprehensive Analysis of the ESP32 Wireless Communication Module: A Versatile Chip Supporting the IoT Landscape From Wi-Fi 6 to Bluetooth Mesh, this domestic chip priced at ¥10 is revolutionizing the IoT world! 📡 1. Wireless Communication: Full-Stack Protocols Controlled by One Chip Dual-Mode Integration: The Golden Combination of Wi-Fi + Bluetooth Classic Bluetooth for … Read more
ESP32: The Internet of Things Universe in a Chip, Unveiling the “Contradiction” Art of Chinese Chips Sold at a cabbage price, operated with the heart of selling white powder—when this 8 yuan Chinese chip was used by NASA in the Mars greenhouse experiment, even Intel engineers exclaimed: “It is redefining the philosophical boundaries of chip … Read more
Effect Demonstration Persistence of Vision and Flicker Perception: Why Delay Matters? 🤔 In our daily lives, we are often captivated by some magical visual phenomena👀: waving glow sticks at night can create continuous light trails in the air✨; old televisions display frames one by one, yet we perceive them as smooth animations🎞️. Behind these fascinating … Read more
🌟 In-Depth Analysis of ESP32 Hardware Interfaces: The All-in-One IoT Solution Behind 34 GPIOs How to leverage sensors, screens, motors, and even AI with a cost of just ¥10? 🔌 1. Overview of Hardware Interfaces: The Infinite Possibilities of 34 GPIOs The ESP32 featuresup to 34 programmable GPIOs, which can be flexibly reconfigured as UART, … Read more
Chapter 1 Introduction FreeRTOS™ is a market-leading real-time operating system (RTOS) designed for microcontrollers and small microprocessors. FreeRTOS is released under the MIT open-source license and includes a kernel and a continuously expanding library suitable for all industry sectors. The design of FreeRTOS emphasizes reliability and ease of use. With increasingly stringent safety regulations in … Read more
RTOS Task Execution Order with Equal Priorities: This question has puzzled many beginners. Today, I will briefly describe it with examples. What is RTOS Task Priority? In an RTOS, each task is assigned a priority. Among all ready tasks, the task with a higher priority executes first. When we create a task, we need to … Read more
Hello everyone, I am the Intelligence Guy~ During the development of RTOS, you must have encountered the issue of priority inversion, where a low-priority task is preempted by a higher-priority task due to shared resource access. This contradicts the real-time performance of a preemptive kernel. The core of solving the priority inversion problem in RTOS … Read more